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Dai H, Zhang Y, Jin X, Yang W, Luo Y, Yang K, Fu Y, Xu W. Reaction Time Induced a Two-Step Dissolution and Recrystallization Structural Transformation with Three Eu Metal-Organic Frameworks: Crystal Structures and Multiresponsive Fluorescence Detection. Inorg Chem 2024; 63:18058-18072. [PMID: 39287663 DOI: 10.1021/acs.inorgchem.4c02643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/19/2024]
Abstract
Under solvothermal conditions, three 3D lanthanide metal-organic frameworks (Ln-MOFs): [Eu(H2DHTA)1.5(DMF)2]·DMF (1), [Eu(H2DHTA)0.5(DHTA)0.5(DMF)(H2O)]·2H2O (2), and Eu(HCOO)3 (3) (H4DHTA = 2,5-dihydroxyterephthalic acid) have been synthesized by different reaction times. Interestingly, induced by reaction time, compounds 1-3 underwent a two-step dissolution and recrystallization structural transformation (DRST) reaction. Investigations on the DRST processes were carried out, and the transformation pathway was deduced, which was verified by XRD analyses. Notably, compound 2 demonstrates pronounced luminescence as well as high stability in water and other organic solvents. The fluorescent detection of furan antibiotics can serve as turn-off effects, and glutamic acid (Glu), aspartic acid (Asp), and riboflavin (VB2) can serve as the turn-on effect. To explain the enhancing and quenching mechanisms, XRD, UV-visible absorption spectroscopy, electrochemistry, IR spectra, theoretical calculation, fluorescence lifetimes, and XPS were discussed. Additionally, MOF-coated test strips were utilized to detect these analytes, exhibiting excellent agreement with fluorescence spectroscopy. This work provides an example for more effective designs to employ Ln-MOFs as multiresponsive fluorescent sensors for detection of environmental pollutants in aqueous solution.
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Affiliation(s)
- Huan Dai
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
- Department of Pharmaceutical Engineering and Biotechnology, Zhejiang Pharmaceutical University, Ningbo 315199, China
| | - Ya Zhang
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Xiaoping Jin
- Department of Pharmaceutical Engineering and Biotechnology, Zhejiang Pharmaceutical University, Ningbo 315199, China
| | - Wensu Yang
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
- Department of Pharmaceutical Engineering and Biotechnology, Zhejiang Pharmaceutical University, Ningbo 315199, China
| | - Yunjie Luo
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Ke Yang
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Yu Fu
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Wei Xu
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
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Abbas A, Ahmad MS, Cheng YH, AlFaify S, Choi S, Irfan RM, Numan A, Khalid M. A comprehensive review on the enantiomeric separation of chiral drugs using metal-organic frameworks. CHEMOSPHERE 2024; 364:143083. [PMID: 39154761 DOI: 10.1016/j.chemosphere.2024.143083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Revised: 08/11/2024] [Accepted: 08/11/2024] [Indexed: 08/20/2024]
Abstract
Chiral drugs play an important role in modern medicine, but obtaining pure enantiomers from racemic mixtures can pose challenges. When a drug is chiral, only one enantiomer (eutomer) typically exhibits the desired pharmacological activity, while the other (distomer) may be biologically inactive or even toxic. Racemic drug formulations introduce additional health risks, as the body must still process the inactive or detrimental enantiomer. Some distomers have also been linked to teratogenic effects and unwanted side effects. Therefore, developing efficient and scalable methods for separating chiral drugs into their pure enantiomers is critically important for improving patient safety and outcomes. Metal-organic frameworks (MOFs) show promise as novel materials for chiral separation due to their highly tunable structures and interactions. This review summarizes recent advancements in using MOFs for chromatographic and spectroscopic resolution of drug enantiomers. Both the opportunities and limitations of MOF-based separation techniques are discussed. A thorough understanding of these methods could aid the continued development of pure enantiomer formulations and help reduce health risks posed by racemic drug mixtures.
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Affiliation(s)
- Anees Abbas
- Department of Chemistry, University of Mianwali, Mianwali, Punjab, 42200, Pakistan; Graphite Technology, No. 9 Sinosteel Avenue 313100 Changxing, Zhejiang, China
| | - Muhammad Sheraz Ahmad
- Department of Chemistry, University of Mianwali, Mianwali, Punjab, 42200, Pakistan; Center for Environmental Sustainability and Human Health, Ming Chi University of Technology, New Taipei City, 24301, Taiwan.
| | - Yu-Hsiang Cheng
- Center for Environmental Sustainability and Human Health, Ming Chi University of Technology, New Taipei City, 24301, Taiwan; Department of Safety, Health and Environmental Engineering, Ming Chi University of Technology, New Taipei City, 24301, Taiwan.
| | - S AlFaify
- Advanced Functional Materials and Optoelectronics Laboratory (AFMOL), Department of Physics, College of Science, King Khalid University, Abha, 61413, P.O. Box 9004, Saudi Arabia
| | - Soohoon Choi
- Department of Environmental Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34134, South Korea
| | | | - Arshid Numan
- Sunway Centre for Electrochemical Energy and Sustainable Technology (SCEEST), School of Engineering and Technology, Sunway University, No. 5, Jalan Universiti, Bandar Sunway, 47500, Selangor Darul Ehsan, Malaysia; Department of Applied Physics, Saveetha School of Engineering, Saveetha University (SIMATS), Chennai, India
| | - Mohammad Khalid
- Materials and Manufacturing Research Group, James Watt School of Engineering, University of Glasgow, Glasgow, G128QQ, UK; University Centre for Research and Development, Chandigarh University, Mohali, Punjab, 140413, India.
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3
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Niu X, Zhao R, Yuan M, Liu Y, Yang X, Li H, Xu H, Wang K. Enhanced Enantioselective Discrimination Regulated by Achiral Ligands in Chiral Metal-Organic Frameworks. ACS Sens 2024; 9:4069-4078. [PMID: 39136380 DOI: 10.1021/acssensors.4c01014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2024]
Abstract
Enantioselective recognition is a fundamental property of chiral linkers in chiral metal-organic frameworks (CMOFs). However, clarifying the efficient enantioselective discrimination tailored by achiral linkers remains challenging to explain the chiral recognition mechanism and efficiency. Here, two CMOFs ([Zn2(l-Phe)2(bpa)2]n and [Zn2(l-Phe)2(bpe)2]n) with the completely different enantioselective recognition are synthesized from different nonchiral ligands and the same chiral ligands. The enantioselective recognition of CMOF is undoubtedly related to l-Phe, which differs in the hydrogen bonding to the Trp enantiomer. However, the electrochemical signals are weak and undifferentiated. [Zn2(l-Phe)2(bpe)2]n produces a flattened coplanar conformation with the -C═C- tether in the achiral ligand. The flattened achiral bpee ligand and its surrounding chiral phenylalanine molecules interact through multiple π-π stacking and hydrogen bonding, which together create a chiral sensor that facilitates the recognition of l-Trp. However, [Zn2(l-Phe)2(bpa)2]n produces a stepped conformation due to the -C-C- tether in the achiral ligand; despite the recognition effect of bpea, the recognition is unsatisfactory. Therefore, the chiral recognition of the two CMOFs stems from the synergistic effect between chiral and achiral ligands. This work shows that nonchiral ligands are also crucial in determining enantiomeric discrimination and opens up a new avenue for designing chiral materials.
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Affiliation(s)
- Xiaohui Niu
- College of Petrochemical Technology, Lanzhou University of Technology, 730050 Lanzhou, PR China
| | - Rui Zhao
- College of Petrochemical Technology, Lanzhou University of Technology, 730050 Lanzhou, PR China
| | - Mei Yuan
- College of Petrochemical Technology, Lanzhou University of Technology, 730050 Lanzhou, PR China
| | - Yongqi Liu
- College of Petrochemical Technology, Lanzhou University of Technology, 730050 Lanzhou, PR China
| | - Xing Yang
- College of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, PR China
| | - Hongxia Li
- College of Petrochemical Technology, Lanzhou University of Technology, 730050 Lanzhou, PR China
| | - Hui Xu
- College of Petrochemical Technology, Lanzhou University of Technology, 730050 Lanzhou, PR China
| | - Kunjie Wang
- College of Petrochemical Technology, Lanzhou University of Technology, 730050 Lanzhou, PR China
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4
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Lee J, Cho JB, Li Y, Lee KH, Jang JI, Ok KM. Multifunctional Chiral d 10-Metal Coordination Polymers: Tunable Photoluminescence and Efficient Second-Harmonic Generation with Circular Dichroic Response. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2309323. [PMID: 38085128 DOI: 10.1002/smll.202309323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 12/04/2023] [Indexed: 05/25/2024]
Abstract
A series of homochiral coordination polymers (HCPs), [M2(SIAP)2(bpy)2] [M(S)] and [M2(RIAP)2(bpy)2] [M(R)] (M = Zn or Cd, SIAP or RIAP = (S,S)- or (R,R)- 2,2'-(isophthaloylbis(azanediyl))di-propionic acid, bpy = 4,4'-bipyridine), is successfully synthesized through solvothermal reactions, self-assembling d10 metal cations, chiral dicarboxylic ligands, and π-conjugated bipyridyl ligands. The HCPs crystallize in the extremely rare triclinic chiral space group, P1, and present 3D framework structures attributed to the strong intermolecular interactions, such as hydrogen bonds and π-π stacking. Due to the unique crystal structures, the title compounds reveal efficient photoluminescence emission across a broad visible range, with significant brightness and color tuning by varying the excitation wavelength. Moreover, they exhibit efficient phase-matched second-harmonic generation (SHG) with very high laser-induced damage thresholds, essential for high-power nonlinear optical (NLO) applications. Intriguingly, the title compounds exhibit a measurable contrast in the SHG response under right- and left-handed circularly polarized excitation, thereby providing a unique case of SHG circular dichroism from the chiral centers of SIAP2- or RIAP2- ligand packed in the noncentrosymmetric environment. These exceptional attributes position these HCPs as promising candidates for multifunctional materials, with potential applications ranging from NLO devices to tailored luminescent systems with polarization control.
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Affiliation(s)
- Jihyun Lee
- Department of Chemistry, Sogang University, Seoul, 04107, Republic of Korea
| | - Jeong Bin Cho
- Department of Physics, Sogang University, Seoul, 04107, Republic of Korea
| | - Yang Li
- Department of Chemistry, Sogang University, Seoul, 04107, Republic of Korea
| | - Kyeong-Hyeon Lee
- Department of Physics, Sogang University, Seoul, 04107, Republic of Korea
| | - Joon Ik Jang
- Department of Physics, Sogang University, Seoul, 04107, Republic of Korea
| | - Kang Min Ok
- Department of Chemistry, Sogang University, Seoul, 04107, Republic of Korea
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5
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Hubber A, Hua C. Chiral Metal-Organic Frameworks with Spectroscopic Methods: Towards Chemical Sensor Devices. Chemistry 2024:e202400071. [PMID: 38570194 DOI: 10.1002/chem.202400071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 04/03/2024] [Accepted: 04/03/2024] [Indexed: 04/05/2024]
Abstract
Chiral Metal-Organic Frameworks (CMOFs) are a rapidly growing field reflecting their potential as selective and sensitive chemical sensors for chiral analytes. The highly tuneable nature of CMOFs enables the size, shape, and non-covalent interactions to be optimised towards specific analytes to engender strong intermolecular interactions and sensing responses. While CMOFs as chiral chemical sensor devices have been explored with electrochemical methods including differential pulse voltammetry (DPV), bipolar and chemiresistive sensing techniques, the CMOFs as chiral chemical sensors using spectroscopic methods has received significantly less attention. This review examines the synthesis of CMOFs for chemical sensors with spectroscopic methods such as photoluminescence, circular dichroism, and solid-state nuclear magnetic resonance with a view towards their incorporation into chemical sensor devices. Future directions of the field are highlighted for the generation of functional devices.
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Affiliation(s)
- Angus Hubber
- School of Life and Environmental Sciences, Deakin University, Waurn Ponds, 3216, Victoria, Australia
| | - Carol Hua
- School of Chemistry, The University of Melbourne, Parkville, 3010, Victoria, Australia
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Fan J, Chen M, Liu C, Li J, Yu A, Zhang S. A free carboxyl-decorated metal-organic framework with 3D helical chirality for highly enantioselective recognition. Talanta 2024; 268:125255. [PMID: 37844431 DOI: 10.1016/j.talanta.2023.125255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 09/26/2023] [Accepted: 09/28/2023] [Indexed: 10/18/2023]
Abstract
With the judicious selection of a designed polycarboxylate derived from L-phenylalanine, (S)-5-(((1-carboxy-2-phenylethyl)amino)methyl)isophthalic acid (H3L), a novel homochiral metal-organic framework decorated with a free carboxyl, {[Cu2(HL)2(bipy)]∙2H2O}n (Cu-MOF), has been designed and synthesized in a solvothermal process. The result of single crystal X-ray diffraction analysis showed that Cu-MOF had the character of a three-dimensional structure with helical chirality. As we expected, in Cu-MOF, one accessible free carboxylic acid group on H3L pointed toward the spiral channels, and the other two -COOH groups were utilized in bonding. The enantioseparation performance of Cu-MOF was thoroughly investigated and the results showed that Cu-MOF can specifically recognize S-1-(1-naphthyl) ethanol (S-NE) with enantiomeric excess (ee) value of 99.35 %, which was much higher than the other three racemates. The appropriate size together with suitable interaction sites played an important role in enantioseparations. Inspired by the excellent chiral recognition effects towards S-NE, the chiral recognition mechanism was experimentally clarified. A fully agreement observed in 13C CP MAS NMR analysis as well as the X-ray photoelectron spectroscopy (XPS) determination revealed that a strong hydrogen bonding interaction forces existed between the hydroxyl of the optical S-NE and the decorated -COOH in the chiral framework. The control experiment further identified the decisive role of the uncoordinated carboxyl group in Cu-MOF. In addition, the strong intermolecular off-set π-π interactions between the phenyl ring involved with the coordinated COO- groups in Cu-MOF and the naphthyl ring of S-NE, was the another important factor for the specifical enantioseparation of S-enantiomer. On the basis of strong intermolecular hydrogen bonding, NE racemates were enantioselective discriminated and enantiomeric purity can be determined by means of Raman scattering spectroscopy.
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Affiliation(s)
- Jiayi Fan
- College of Chemistry, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan, 450001, PR China
| | - Miao Chen
- College of Chemistry, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan, 450001, PR China
| | - Chunyan Liu
- College of Chemistry, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan, 450001, PR China
| | - Jinfan Li
- College of Chemistry, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan, 450001, PR China
| | - Ajuan Yu
- College of Chemistry, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan, 450001, PR China.
| | - Shusheng Zhang
- Center of Advanced Analysis and Gene Sequencing, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan, 450001, PR China
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7
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Li S, Wu Y, Ma X, Pang C, Wang M, Xu Z, Li B. Monitoring levamisole in food and the environment with high selectivity using an electrochemical chiral sensor comprising an MOF and molecularly imprinted polymer. Food Chem 2024; 430:137105. [PMID: 37562261 DOI: 10.1016/j.foodchem.2023.137105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 08/02/2023] [Accepted: 08/03/2023] [Indexed: 08/12/2023]
Abstract
We used an enhanced recognition strategy to fabricate a novel levamisole-detecting chiral electrochemical sensor featuring a metal-organic framework (MOF) combined with a molecularly imprinted polymer (MIP). We first synthesised a Cu/Zn-[benzene-1,3,5-tricarboxylic acid] (Cu/Zn-BTC) MOF as the molecular immobilisation and signal-amplifying unit, and then prepared the MIP (molecular recognition unit) using levamisole as the template on a glassy carbon electrode modified with Cu/Zn-BTC. We obtained a composite chiral sensor with enhanced recognition capability for levamisole after template removal. Using the templated sites as the switch and K3[Fe(CN)6]/K4[Fe(CN)6] as a probe, we established a new method for detecting levamisole in meat products and water bodies. The linear detection range and detection limit of our chiral sensor are 5 to 6000 × 10-11 mol/L and 1.65 × 10-12 mol/L, respectively. Moreover, the sensor exhibited 93.8-109.0% recovery in the detection of levamisole in chicken and other real samples.
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Affiliation(s)
- Shuhuai Li
- Analysis and Test Center, Chinese Academy of Tropical Agricultural Sciences, Hainan Provincial Key Laboratory of Quality and Safety for Tropical Fruits and Vegetables, Key Laboratory of Quality and Safety Control of Subtropical Fruits and Vegetables, Ministry of Agriculture and Rural Affairs, Haikou 571101, China; Key Laboratory of Tropical Fruits and Vegetables Quality and Safety for State Market Regulation, Haikou 570311, China.
| | - Yuwei Wu
- Analysis and Test Center, Chinese Academy of Tropical Agricultural Sciences, Hainan Provincial Key Laboratory of Quality and Safety for Tropical Fruits and Vegetables, Key Laboratory of Quality and Safety Control of Subtropical Fruits and Vegetables, Ministry of Agriculture and Rural Affairs, Haikou 571101, China; Key Laboratory of Tropical Fruits and Vegetables Quality and Safety for State Market Regulation, Haikou 570311, China
| | - Xionghui Ma
- Analysis and Test Center, Chinese Academy of Tropical Agricultural Sciences, Hainan Provincial Key Laboratory of Quality and Safety for Tropical Fruits and Vegetables, Key Laboratory of Quality and Safety Control of Subtropical Fruits and Vegetables, Ministry of Agriculture and Rural Affairs, Haikou 571101, China; Key Laboratory of Tropical Fruits and Vegetables Quality and Safety for State Market Regulation, Haikou 570311, China
| | - Chaohai Pang
- Analysis and Test Center, Chinese Academy of Tropical Agricultural Sciences, Hainan Provincial Key Laboratory of Quality and Safety for Tropical Fruits and Vegetables, Key Laboratory of Quality and Safety Control of Subtropical Fruits and Vegetables, Ministry of Agriculture and Rural Affairs, Haikou 571101, China; Key Laboratory of Tropical Fruits and Vegetables Quality and Safety for State Market Regulation, Haikou 570311, China
| | - Mingyue Wang
- Analysis and Test Center, Chinese Academy of Tropical Agricultural Sciences, Hainan Provincial Key Laboratory of Quality and Safety for Tropical Fruits and Vegetables, Key Laboratory of Quality and Safety Control of Subtropical Fruits and Vegetables, Ministry of Agriculture and Rural Affairs, Haikou 571101, China; Key Laboratory of Tropical Fruits and Vegetables Quality and Safety for State Market Regulation, Haikou 570311, China.
| | - Zhi Xu
- Analysis and Test Center, Chinese Academy of Tropical Agricultural Sciences, Hainan Provincial Key Laboratory of Quality and Safety for Tropical Fruits and Vegetables, Key Laboratory of Quality and Safety Control of Subtropical Fruits and Vegetables, Ministry of Agriculture and Rural Affairs, Haikou 571101, China; Key Laboratory of Tropical Fruits and Vegetables Quality and Safety for State Market Regulation, Haikou 570311, China.
| | - Bei Li
- Key Laboratory of Tropical Fruits and Vegetables Quality and Safety for State Market Regulation, Haikou 570311, China
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Beyranvand F, Khosravi A, Zabihi F, Nemati M, Gholami MF, Tavakol M, Beyranvand S, Satari S, Rabe JP, Salimi A, Cheng C, Adeli M. Synthesis of Chiral Triazine Frameworks for Enantiodiscrimination. ACS APPLIED MATERIALS & INTERFACES 2023; 15:56213-56222. [PMID: 37992272 DOI: 10.1021/acsami.3c16659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2023]
Abstract
Manipulation of the structure of covalent organic frameworks at the molecular level is an efficient strategy to shift their biological, physicochemical, optical, and electrical properties in the desired windows. In this work, we report on a new method to construct chiral triazine frameworks using metal-driven polymerization for enantiodiscrimination. The nucleophilic substitution reaction between melamine and cyanuric chloride was performed in the presence of PdCl2, ZnCl2, and CuCl2 as chirality-directing agents. Palladium, with the ability of planar complex formation, was able to assemble monomers in two-dimensions and drive the reaction in two directions, leading to a two-dimensional triazine network with several micrometers lateral size. Nonplanar arrangements of monomers in the presence of ZnCl2 and CuCl2, however, resulted in calix and bouquet structures, respectively. While 2D and bouquet structures showed strong negative and positive bands in the CD spectra, respectively, their calix counterparts displayed long-range weak negative bands. In spite of the ability of both calix and bouquet networks to load l-histidine 35 and 50% more than d-histidine from pure enantiomers, respectively, only calix counterparts were able to take up this enantiomer (78%) from the racemic mixture. The two-dimensional polytriazine network did not show any specific interactions with pure enantiomers or their racemic mixtures.
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Affiliation(s)
- Fatemeh Beyranvand
- Faculty of Science, Department of Chemistry, Lorestan University, 6815144316 Khorramabad, Iran
| | - Armaghan Khosravi
- Laboratory for Nanomaterials and Molecular Plasmonics, Department of Chemistry and Biology, Toronto Metropolitan University, 350 Victoria Street, Toronto, Ontario M5B 2K3, Canada
| | - Fatemeh Zabihi
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Mohammad Nemati
- Faculty of Science, Department of Chemistry, Lorestan University, 6815144316 Khorramabad, Iran
| | - Mohammad Fardin Gholami
- Department of Physics & IRIS Adlershof, Humboldt-Universität zu Berlin, Newtonstr. 15, 12489 Berlin, Germany
| | - Mahdi Tavakol
- Biomedical Engineering and Biomechanics Research Centre, School of Engineering, College of Science and Engineering, National University of Ireland Galway, H91-TK33 Galway, Ireland
| | - Siamak Beyranvand
- Faculty of Science, Department of Chemistry, Lorestan University, 6815144316 Khorramabad, Iran
| | - Shabnam Satari
- Faculty of Science, Department of Chemistry, Lorestan University, 6815144316 Khorramabad, Iran
| | - Jürgen P Rabe
- Department of Physics & IRIS Adlershof, Humboldt-Universität zu Berlin, Newtonstr. 15, 12489 Berlin, Germany
| | - Abdollah Salimi
- Department of Chemistry, Faculty of Science, University of Kurdistan, 66177-15175 Sanandaj, Kurdistan, Iran
| | - Chong Cheng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, 610065 Chengdu, China
| | - Mohsen Adeli
- Faculty of Science, Department of Chemistry, Lorestan University, 6815144316 Khorramabad, Iran
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
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9
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Ibrahim AE, El Gohary NA, Aboushady D, Samir L, Karim SEA, Herz M, Salman BI, Al-Harrasi A, Hanafi R, El Deeb S. Recent advances in chiral selectors immobilization and chiral mobile phase additives in liquid chromatographic enantio-separations: A review. J Chromatogr A 2023; 1706:464214. [PMID: 37506464 DOI: 10.1016/j.chroma.2023.464214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 07/10/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023]
Abstract
For decades now, the separation of chiral enantiomers of drugs has been gaining the interest and attention of researchers. In 1991, the first guidelines for development of chiral drugs were firstly released by the US-FDA. Since then, the development in chromatographic enantioseparation tools has been fast and variable, aiming at creating a suitable environment where the physically and chemically identical enantiomers can be separated. Among those tools, the immobilization of chiral selectors (CS) on different stationary phases and the chiral mobile phase additives (CMPA) which have been progressed and studied extensively. This review article highlights the major advances in immobilization of CS together with their different recognition mechanisms as well as CMPA as a cheaper and successful alternative for chiral stationary phases. Moreover, the role of molecular modeling tool as a pre-step in the choice of CS for evaluating possible interactions with different ligands has been pointed up. Illustrations of reported methods and updates for immobilized CS and CMPA have been included.
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Affiliation(s)
- Adel Ehab Ibrahim
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Port-Said University, Port-Said 42511, Egypt; Natural and Medical Sciences Research Center, University of Nizwa, P.O. Box 33, Birkat Al Mauz, Nizwa 616, Sultanate of Oman
| | - Nesrine Abdelrehim El Gohary
- Pharmaceutical Chemistry Department, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo 11835, Egypt
| | - Dina Aboushady
- Pharmaceutical Chemistry Department, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo 11835, Egypt
| | - Liza Samir
- Pharmaceutical Chemistry Department, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo 11835, Egypt
| | - Shereen Ekram Abdel Karim
- Pharmaceutical Chemistry Department, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo 11835, Egypt
| | - Magy Herz
- Pharmaceutical Chemistry Department, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo 11835, Egypt
| | - Baher I Salman
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut, 71524, Egypt
| | - Ahmed Al-Harrasi
- Natural and Medical Sciences Research Center, University of Nizwa, P.O. Box 33, Birkat Al Mauz, Nizwa 616, Sultanate of Oman
| | - Rasha Hanafi
- Pharmaceutical Chemistry Department, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo 11835, Egypt
| | - Sami El Deeb
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Braunschweig 38092, Germany; Institute of Pharmacy, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195 Berlin, Germany.
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10
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Li M, Yuan D, Wu B, Hong M. Engineering UiO-68-Typed Homochiral Metal-Organic Frameworks for the Enantiomeric Separation of Fmoc-AAs and Mechanism Study. ACS APPLIED MATERIALS & INTERFACES 2023; 15:22241-22250. [PMID: 37125930 DOI: 10.1021/acsami.3c01735] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Homochiral metal-organic frameworks (HMOFs) have been widely investigated in the application of enantiomeric separation. Nonetheless, it remains a significant challenge to explore the effect of multiple weak interactions between HMOF adsorbents and chiral adsorbates on enantiomeric separation performance still. In this work, robust chiral amine-alcohol-functionalized UiO-68-typed Zr-HMOFs 1-3 with the same hydrogen-bonding sites but slightly different π-binding sites were prepared for the enantioseparation of amino acid derivatives (Fmoc-AAs) with large π-binding groups. As a consequence of multiple host-guest interactions, these Zr-HMOFs exhibit speedy adsorption and high adsorption capacity for Fmoc-L/D-AAs and dissimilar enantioselectivity for the adsorption of their enantiomers. Materials 1 and 2 exhibit excellent enantioselective separation performance for Fmoc-valine with a single terminal π-binding group, while material 3 displays excellent enantioselective separation performance for Fmoc-phenylalanine and Fmoc-tryptophan with π-binding groups at both ends. As evidently demonstrated by our experimental and density functional theory (DFT) computational results, when the number of π-binding groups preset in the confined chiral space of adsorbents matches the number of π-binding groups of chiral adsorbates, the synergism of π-π or σ-π interactions will increase enantioselectivity; otherwise, the competition interactions from redundant identical binding sites will weaken enantioselectivity. Our case not only provides a tremendously typical system for investigating the collaborative discrimination of multiple weak interactions and exploring the impact of relatively excessive binding sites of HMOF adsorbents or chiral adsorbates on the enantioselective separation performance but also provides guidance for targeted functional modifications of high-performance chiral porous materials.
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Affiliation(s)
- Mengna Li
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Daqiang Yuan
- State Key Laboratory of Structural Chemistry, Fujian Institute of the Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China
| | - Benlai Wu
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Maochun Hong
- State Key Laboratory of Structural Chemistry, Fujian Institute of the Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China
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11
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Tan D, Wang T, Hu J, Deng D, Li T, Li R. Chiral covalent organic frameworks synthesized via a Suzuki–Miyaura-coupling reaction: enantioselective recognition of d/ l-amino acids. NEW J CHEM 2023. [DOI: 10.1039/d2nj05811a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/15/2023]
Abstract
A novel chiral COF was constructed via a Suzuki–Miyaura-coupling strategy for the chiral recognition and separation of amino acids.
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Affiliation(s)
- Dongdong Tan
- Department of Analytical Chemistry, China Pharmaceutical University, No. 24 TongJiaXiang, Nanjing, 210009, China
| | - Tianmiao Wang
- Department of Analytical Chemistry, China Pharmaceutical University, No. 24 TongJiaXiang, Nanjing, 210009, China
| | - Jing Hu
- Department of Analytical Chemistry, China Pharmaceutical University, No. 24 TongJiaXiang, Nanjing, 210009, China
| | - Donglian Deng
- Department of Analytical Chemistry, China Pharmaceutical University, No. 24 TongJiaXiang, Nanjing, 210009, China
| | - Tingting Li
- Department of Analytical Chemistry, China Pharmaceutical University, No. 24 TongJiaXiang, Nanjing, 210009, China
| | - Ruijun Li
- Department of Analytical Chemistry, China Pharmaceutical University, No. 24 TongJiaXiang, Nanjing, 210009, China
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12
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Berijani K, Chang LM, Gu ZG. Chiral templated synthesis of homochiral metal-organic frameworks. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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13
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He YC, Yu HL, Zhao KY, Wang Y, Geng CS, Wu S, Yang HK, Zhao FH. Three new Zn( ii) coordination polymers for highly selective and sensitive detection of Fe 3+. CrystEngComm 2023. [DOI: 10.1039/d2ce01382g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In this work, three novel Zn(ii)-CPs with diverse structures and fascinating topologies can be highly selective and sensitive luminescent sensors for detection of Fe3+.
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Affiliation(s)
- Yuan-Chun He
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Hao-Long Yu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Kai-Yang Zhao
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Yao Wang
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Chang-Sheng Geng
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Shuang Wu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Hong-Kun Yang
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Fang-Hua Zhao
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
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15
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Dhurjad P, Dhalaram CS, Ali N, Kumari N, Sonti R. Metal-organic frameworks in chiral separation of pharmaceuticals. Chirality 2022; 34:1419-1436. [PMID: 35924487 DOI: 10.1002/chir.23499] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 07/21/2022] [Accepted: 07/22/2022] [Indexed: 12/18/2022]
Abstract
Stereoselective chiral molecules are responsible for specific biological functions in nature. At present, more than half of the prescribed drugs are chiral. Living organisms display divergent pharmacological responses to the enantiomers, leading to altered toxicity, pharmacokinetics, and pharmacodynamics. Thus, chiral analysis, separation, and extraction are crucial for ensuring enantiomeric purity to develop safe and effective medication. In recent times, metal-organic frameworks (MOFs) with appealing structures are gaining importance because of their fascinating properties as a sorbent and stationary phase. MOFs are crystalline porous solid materials built by interconnecting metal ions or clusters and organic linkers. This review explores the advancements in MOFs for the isolation and separation of chiral active pharmaceutical drugs.
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Affiliation(s)
- Pooja Dhurjad
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Choudhary Sampat Dhalaram
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Nazish Ali
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Nikita Kumari
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Rajesh Sonti
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
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16
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Experimentally probing the chiral recognition mechanism of 1,1′-bi-2-naphthol on a nitrogen enriched chiral metal-organic framework. Microchem J 2022. [DOI: 10.1016/j.microc.2021.107092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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17
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Supramolecule self-assembly synthesis of amyloid phenylalanine-Cu fibrils with laccase-like activity and their application for dopamine determination. Mikrochim Acta 2022; 189:98. [PMID: 35147785 DOI: 10.1007/s00604-022-05194-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 01/17/2022] [Indexed: 10/19/2022]
Abstract
Laccases are multicopper proteins for dioxygen-involved oxidation of a broad spectrum of organic compounds. I Novel amyloid-like phenylalanine-Cu (F-Cu(II)) fibrils were developed, which were obtained via supramolecular self-assembly of Cu2+ and phenylalanine (F) under basic condition. The obtained amyloid-like fibrils represented highly periodic structure, of which the lattice unit was constructed via alternating hydrophobic (aromatic environment) and hydrophilic (both hydrogen bonding and Cu(II) coordination) interactions. Relative to natural laccases, the amyloid-like F-Cu(II) architecture exhibited comparable substrate affinity (Michaelis constant, Km = 0.75 mM) and higher catalytic efficiency (kcat/Km = 773.33 × 10-3 g-1 min-1L). Moreover, it exhibited remarkable tolerances in pH (4 ~ 10), temperature (room temperature ~ 200 ℃), organic solvent, and long-term storage (> 15 days). These stabilities were superior among the reported nature and artificial laccases, presenting a more promising candidate in various chemo- or bio-applications. In addition, F-Cu(II) fibrils could catalyze the oxidation of dopamine (DA) to a brown product, in which a new absorption band at 470 nm was observed. Based on this, a simple colorimetric assay for the detection of DA could be performed. We reported a novel amyloid-like phenylalanine-Cu fibrils, in which F-Cu+ complex can mimick the T1 site of natural laccase to oxidize the substrates. Then electrons transferred to F-Cu2+ complex via N-H···O=C hydrogen binding pathway. Finally, the dioxygen was transformed to water though radical reaction.
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18
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Niu X, Yan S, Chen J, Li H, Wang K. Enantioselective recognition of L/D-amino acids in the chiral nanochannels of a metal-organic framework. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2021.139809] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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19
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Ma X, Guo Y, Zhang L, Wang K, Yu A, Zhang S, Ouyang G. Crystal morphology tuning and green post-synthetic modification of metal organic framework for HPLC enantioseparation. Talanta 2021; 239:123143. [PMID: 34923255 DOI: 10.1016/j.talanta.2021.123143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 12/09/2021] [Accepted: 12/11/2021] [Indexed: 10/19/2022]
Abstract
Chiral metal-organic frameworks (CMOFs) served as chiral stationary phases (CSPs) show great potential in enantioseparation field. However, their performance improvement are still hindered by the difficult column packed and high back pressure due to the irregular morphology and broad size scope of CMOF particles. Here, the size and morphology of achiral Co-MOF-74 were effectively adjusted by controlling the synthetic route, temperature, the ratio of reactants and the amount of 2-methylimidazole (2-MI) at first. As a result, the uniformly spherical crystals in size of about 5 μm with good dispersion were obtained. Subsequently, a simple, green post-synthetic modification strategy was proposed for the fabrication of l-tyrosine functionalized Co-MOF-74, namely Co-MOF-74-L-Tyr in H2O by incorporating l-tyrosine into the parent framework of Co-MOF-74 to construct chiral microenvironment. The homochiral Co-MOF-74-L-Tyr CSP gave superior enantioseparation performance for the eight chiral drugs and drug intermediates, such as nitrendipine, nimodipine, benzoin, 2,2'-furoin and bi-2-naphthol to the commercial columns under normal phase condition. The good repeatability and stability of this CSP was verified by the replicate enantioseparation for nimodipine and flavanone. Furthermore, the Co-MOF-74-L-Tyr packed column was successfully applied to detect the product N-1-(1-naphthyl)ethyltosylamide (HR-8) in the asymmetric reductive amination reaction. The size/morphology-controlled synthesis coupled with the green post-synthetic modification approach paves the way to fabricate target chiral MOFs with pre-designed functional groups, which is an effective complement for the preparation of CSPs in chiral chromatography.
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Affiliation(s)
- Xue Ma
- College of Chemistry, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan, 450001, PR China
| | - Yun Guo
- College of Chemistry, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan, 450001, PR China
| | - Ling Zhang
- College of Chemistry, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan, 450001, PR China
| | - Kexuan Wang
- College of Chemistry, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan, 450001, PR China
| | - Ajuan Yu
- College of Chemistry, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan, 450001, PR China.
| | - Shusheng Zhang
- Center of Advanced Analysis and Gene Sequencing, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan, 450001, PR China
| | - Gangfeng Ouyang
- Center of Advanced Analysis and Gene Sequencing, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan, 450001, PR China
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20
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Guo Y, Zhang L, Wang K, Yu A, Zhang S, Ouyang G. Decorated traditional cellulose with nanoscale chiral metal-organic frameworks for enhanced enantioselective capture. Chem Commun (Camb) 2021; 57:10343-10346. [PMID: 34528980 DOI: 10.1039/d1cc04465f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Herein, a rapid approach toward the size/morphology-controlled synthesis of [Cu(L-mal)(bipy)·2H2O] (CuLBH) was developed by adjusting the concentrations of 2-methylimidazole (2-MI) and copper ions. The chiral separation efficiency test indicated that the nano-diameter CuLBH exhibited better selective potential towards (±)-1-(1-naphthyl)ethanol (NE) by providing more fully exposed recognition sites. In order to further improve the selectivity for NE enantiomers and avoid the aggregation of MOF nanoparticles, the nanosized CuLBH-decorated carboxylated cellulose (CC) composite CC-CuLBH was designed by controlling the ratio of the solvent and Cu2+, which exhibited much higher enantioselectivity than those of pristine CC and even nano CuLBH.
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Affiliation(s)
- Yun Guo
- College of Chemistry, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan, 450001, P. R. China.
| | - Ling Zhang
- College of Chemistry, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan, 450001, P. R. China.
| | - Kexuan Wang
- College of Chemistry, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan, 450001, P. R. China.
| | - Ajuan Yu
- College of Chemistry, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan, 450001, P. R. China.
| | - Shusheng Zhang
- Center of Advanced Analysis and Gene Sequencing, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan, 450001, P. R. China
| | - Gangfeng Ouyang
- Center of Advanced Analysis and Gene Sequencing, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan, 450001, P. R. China
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21
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Chiral metal–organic frameworks based on asymmetric synthetic strategies and applications. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214083] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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22
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Pow RW, Sinclair ZL, Bell NL, Watfa N, Abul‐Haija YM, Long D, Cronin L. Enantioselective Recognition of Racemic Amino Alcohols in Aqueous Solution by Chiral Metal-Oxide Keplerate {Mo 132 } Cluster Capsules. Chemistry 2021; 27:12327-12334. [PMID: 34196438 PMCID: PMC8457076 DOI: 10.1002/chem.202100899] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Indexed: 11/06/2022]
Abstract
Determining the relative configuration or enantiomeric excess of a substance may be achieved using NMR spectroscopy by employing chiral shift reagents (CSRs). Such reagents interact noncovalently with the chiral solute, resulting in each chiral form experiencing different magnetic anisotropy; this is then reflected in their NMR spectra. The Keplerate polyoxometalate (POM) is a molybdenum-based, water-soluble, discrete inorganic structure with a pore-accessible inner cavity, decorated by differentiable ligands. Through ligand exchange from the self-assembled nanostructure, a set of chiral Keplerate host molecules has been synthesised. By exploiting the interactions of analyte molecules at the surface pores, the relative configuration of chiral amino alcohol guests (phenylalaninol and 2-amino-1-phenylethanol) in aqueous solvent was establish and their enantiomeric excess was determined by 1 H NMR using shifts of ΔΔδ=0.06 ppm. The use of POMs as chiral shift reagents represents an application of a class that is yet to be well established and opens avenues into aqueous host-guest chemistry with self-assembled recognition agents.
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Affiliation(s)
- Robert W. Pow
- Department of ChemistryUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | - Zoё L. Sinclair
- Department of ChemistryUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | - Nicola L. Bell
- Department of ChemistryUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | - Nancy Watfa
- Department of ChemistryUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | | | - De‐Liang Long
- Department of ChemistryUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | - Leroy Cronin
- Department of ChemistryUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
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23
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Enríquez‐Cabrera A, Ridier K, Salmon L, Routaboul L, Bousseksou A. Complete and Versatile Post‐Synthetic Modification on Iron‐Triazole Spin Crossover Complexes: A Relevant Material Elaboration Method. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100090] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Alejandro Enríquez‐Cabrera
- CNRS Laboratoire de Chimie de Coordination (LCC) 205 route de Narbonne, BP44099 Toulouse Cedex 4 31077 France
| | - Karl Ridier
- CNRS Laboratoire de Chimie de Coordination (LCC) 205 route de Narbonne, BP44099 Toulouse Cedex 4 31077 France
| | - Lionel Salmon
- CNRS Laboratoire de Chimie de Coordination (LCC) 205 route de Narbonne, BP44099 Toulouse Cedex 4 31077 France
| | - Lucie Routaboul
- CNRS Laboratoire de Chimie de Coordination (LCC) 205 route de Narbonne, BP44099 Toulouse Cedex 4 31077 France
| | - Azzedine Bousseksou
- CNRS Laboratoire de Chimie de Coordination (LCC) 205 route de Narbonne, BP44099 Toulouse Cedex 4 31077 France
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24
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Thoonen S, Hua C. Chiral Detection with Coordination Polymers. Chem Asian J 2021; 16:890-901. [PMID: 33709619 DOI: 10.1002/asia.202100039] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 03/11/2021] [Indexed: 12/15/2022]
Abstract
Coordination polymers and metal-organic frameworks are prime candidates for general chemical sensing, but the use of these porous materials as chiral probes is still an emerging field. In the last decade, they have found application in a range of chiral analysis methods, including liquid- and gas-phase chromatography, circular dichroism spectroscopy, fluorescence sensing, and NMR spectroscopy. In this minireview, we examine recent works on coordination polymers as chiral sensors and their enantioselective host-guest chemistry, while highlighting their potential for application in different settings.
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Affiliation(s)
- Shannon Thoonen
- School of Chemistry, The University of Melbourne, Parkville, Victoria, 3010, Australia
| | - Carol Hua
- School of Chemistry, The University of Melbourne, Parkville, Victoria, 3010, Australia
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Gambhir D, Mondal B, Koner RR. Molecular-level insights into the self-assembly driven enantioselective recognition process. Chem Commun (Camb) 2021; 57:2535-2538. [PMID: 33566876 DOI: 10.1039/d0cc06612e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The importance of the orientation of functional groups in a chiral environment on enantioselective recognition has been demonstrated. Orientation controlled interactions of functional groups in (R)/(S)-MA lead to a visually differentiable morphology with an arginine-based gelator. The crucial role of various molecular-level interactions discriminating the enantioselective self-assembly has been established using different analytical techniques, crystal structure analysis, and DFT calculations.
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Affiliation(s)
- Diksha Gambhir
- School of Basic Science, Indian Institute of Technology, Mandi, Mandi-175075, Himachal Pradesh, India
| | - Bhaskar Mondal
- School of Basic Science, Indian Institute of Technology, Mandi, Mandi-175075, Himachal Pradesh, India
| | - Rik Rani Koner
- School of Basic Science, Indian Institute of Technology, Mandi, Mandi-175075, Himachal Pradesh, India and School of Engineering, Indian Institute of Technology, Mandi, Mandi-175075, Himachal Pradesh, India.
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26
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Abdelhameed RM, Rocha J, Silva AMS. Selective separation of hibiscus acid from Roselle extracts by an amino-functionalized Metal Organic Framework. J Chromatogr A 2020; 1636:461789. [PMID: 33326926 DOI: 10.1016/j.chroma.2020.461789] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 11/16/2020] [Accepted: 12/04/2020] [Indexed: 01/17/2023]
Abstract
The separation and purification of biologically-active compounds from natural sources is of interest because such molecules find wide application in the pharmaceutical sector and in other industrial areas. Roselle (Hibiscus sabdariffa) plants are a good source of anthocyanins, flavonoids, hydroxycitric acid, tartaric acid, ascorbic acid and hibiscus acid. The separation of hibiscus acid from the Roselle extract is very challenging, requiring the use of selective methods. It is accomplished here by means of the indium-bearing Metal Organic Framework MIL-68-NH2. Before and after exposure to MIL-68-NH2, the Roselle extract is analyzed by thin-layer chromatography, ultraviolet-visible spectrophotometry, gas chromatography-mass spectrometry, and high-performance liquid chromatography. The structural integrity of MIL-68-NH2 after the separations is investigated by powder X-ray diffraction, nuclear magnetic resonance and infrared spectroscopy, confirming the adsorption selectivity of MIL-68-NH2 towards hibiscus acid.
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Affiliation(s)
- Reda M Abdelhameed
- Applied Organic Chemistry Department, National Research Centre, 33 EL Bohouth st., Dokki, Giza, Egypt
| | - João Rocha
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Artur M S Silva
- Department of Chemistry, QOPNA & LAQV-REQUIMTE, University of Aveiro, 3810-193 Aveiro, Portugal.
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Song C, Zhang Y, Li X, Ouyang G, Cui J, Zhang L, Yu A, Zhang S, Cui Y. Morphology-maintaining synthesis of copper hydroxy phosphate@metal-organic framework composite for extraction and determination of trace mercury in rice. Food Chem 2020; 343:128508. [PMID: 33248840 DOI: 10.1016/j.foodchem.2020.128508] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 09/24/2020] [Accepted: 10/26/2020] [Indexed: 02/06/2023]
Abstract
A novel copper hydroxy phosphate@MOF composite DMP-Cu decorated by 2, 5-dimercapto-1, 3, 4-thiadiazol was facilely prepared and characterized. A dispersive SPE strategy using DMP-Cu as adsorbent combined with atomic fluorescence spectroscopy was developed for the selective capture of trace total mercury in rice sample. The adsorption mechanism showed that the Hg2+ removal process was fitted with pseudo second-order kinetics and the Langmuir adsorption model. The adsorbent was easy to be regenerated and the maximum adsorption capacity for the removal of Hg2+ was 249.5 mg g-1 at the optimal pH of 4. X-ray photoelectron spectroscopy and Raman spectra verified the selective and strong interaction between Hg2+ and thiol/nitrogen-containing functional groups of DMTZ on DMP-Cu. The trace total mercury in rice samples was determined with detection limit of 0.0125 ng mL-1 and relative standard deviation below 6%. The high recoveries were obtained in range of 98.8-109% for the spiked rice samples.
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Affiliation(s)
- Chenchen Song
- College of Chemistry, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan 450001, PR China
| | - Yanhao Zhang
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong, PR China
| | - Xinglin Li
- College of Chemistry, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan 450001, PR China
| | - Gangfeng Ouyang
- Center of Advanced Analysis and Computational Science, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan 450001, PR China
| | - Jiting Cui
- College of Chemistry, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan 450001, PR China
| | - Ling Zhang
- College of Chemistry, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan 450001, PR China
| | - Ajuan Yu
- College of Chemistry, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan 450001, PR China.
| | - Shusheng Zhang
- Center of Advanced Analysis and Computational Science, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan 450001, PR China
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Raee E, Li H, Sun X, Ustriyana P, Luo J, Chen J, Sahai N, Liu T. Strong Enantiomeric Preference on the Macroion-Counterion Interaction Induced by Weakly Associated Chiral Counterions. J Phys Chem B 2020; 124:9958-9966. [PMID: 33085899 DOI: 10.1021/acs.jpcb.0c07424] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The role of chiral counterions on the attraction and self-assembly of chiral Pd12L24 metal organic cages (MOCs) with NO3- being the original counterion is studied by laser light scattering and isothermal titration calorimetry. Nitrates can trigger the self-assembly of macrocationic Pd12L24 into hollow spherical blackberry-type supramolecular structures via counterion-mediated attraction. Although chiral counteranions, such as N-(tert-butoxycarbonyl)-alanine (Boc-Ala), have weaker interaction with the MOCs compared to NO3-, they can induce different assembly behaviors between two enantiomeric MOCs by inhibiting the MOC-nitrate binding and weakening the interaction between them. The d-counterions are capable of selectively suppressing and slowing down the assembly of l-MOCs and also considerably decreasing their assembly size due to the much weaker MOC-nitrate interaction. The same scenario is observed for l-counterions when interacting with the d-MOCs. This study unveils the role of weakly associated chiral counterions on the central chiral macroions, especially their supramolecular structure formation, and provides additional evidence on the mechanism of the homochirality phenomenon.
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Affiliation(s)
- Ehsan Raee
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
| | - Hui Li
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
| | - Xinyu Sun
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
| | - Putu Ustriyana
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
| | - Jiancheng Luo
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
| | - Jiahui Chen
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
| | - Nita Sahai
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
| | - Tianbo Liu
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
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Wang C, Zhang L, Li X, Yu A, Zhang S. Controlled fabrication of core-shell silica@chiral metal-organic framework for significant improvement chromatographic separation of enantiomers. Talanta 2020; 218:121155. [DOI: 10.1016/j.talanta.2020.121155] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 05/06/2020] [Accepted: 05/10/2020] [Indexed: 01/15/2023]
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30
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Galaço ARBS, Jesus LT, Freire RO, de Oliveira M, Serra OA. Experimental and Theoretical Studies of Glyphosate Detection in Water by an Europium Luminescent Complex and Effective Adsorption by HKUST-1 and IRMOF-3. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:9664-9672. [PMID: 32786836 DOI: 10.1021/acs.jafc.0c03574] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Designing an effective and simple detection method to quantify glyphosate (GLY) herbicide is desirable. Current chromatography-mass spectrometry and electrochemical methods can be used for this purpose, but these methods are difficult to be made portable and need high-cost equipment. Here, we evaluate a luminescent β-diketonate-Eu-ethylenediaminetetraacetic acid complex for GLY quantification in aqueous media on the basis of the luminescent quenching process. This complex successfully measured GLY at concentrations ranging from 5 × 10-7 to 10-5 mol L-1. Theoretical methods (LUMPAC) are also performed to identify the complex most probable structure in solution. We also demonstrate that the metal-organic frameworks HKUST-1 and IRMOF-3, easily synthesized, effectively adsorb GLY in water in about 30 min of contact.
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Affiliation(s)
- Ayla R B S Galaço
- Chemistry Department, Faculty of Philosophy, Sciences and Letters at Ribeirão Preto (FFCLRP), University of São Paulo, Avenida Bandeirantes 3900, 14040-901 Ribeirão Preto, São Paulo, Brazil
| | - Larissa T Jesus
- Pople Computational Chemistry Laboratory, Chemistry Department, Federal University of Sergipe, 49100-000 Aracaju, Sergipe, Brazil
| | - Ricardo O Freire
- Pople Computational Chemistry Laboratory, Chemistry Department, Federal University of Sergipe, 49100-000 Aracaju, Sergipe, Brazil
| | - Marcos de Oliveira
- São Carlos Institute of Physics, University of São Paulo, Avenida Trabalhador São Carlense 400, 13566-590 São Carlos, São Paulo, Brazil
| | - Osvaldo A Serra
- Chemistry Department, Faculty of Philosophy, Sciences and Letters at Ribeirão Preto (FFCLRP), University of São Paulo, Avenida Bandeirantes 3900, 14040-901 Ribeirão Preto, São Paulo, Brazil
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31
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Han Q, Sun Y, Ding K, Chen X, Han T. Preparation of multitarget immunomagnetic beads based on metal-organic frameworks and their application in food samples. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1158:122341. [PMID: 32882530 DOI: 10.1016/j.jchromb.2020.122341] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 06/10/2020] [Accepted: 08/18/2020] [Indexed: 12/23/2022]
Abstract
A new type of immunomagnetic bead based on the metal-organic framework materials (MOFs) and the magnetic core (Fe3O4) was prepared for analysis of the mycotoxins in food samples. The MOF conjugated with the monoclonal antibodies (McAbs) was coated on the surface of Fe3O4 beads by reversed-phase microemulsion method, which could purify deoxynivalenol (DON), zearalenone (ZEN), T-2, and HT-2 mycotoxins at the same time. The composite (Fe3O4@AMP&ZnCl2@McAbs) was characterized by Transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FTIR), and Energy dispersive spectroscopy (EDS) mapping. The results showed that the synthesis of the composite was successful. The maximum toxin adsorption capacity per 100 mg of composite was DON 688.26 ng, ZEN 864.98 ng, and T-2/HT-2 2801.80 ng, and in adding recovery experiment, the recovery of four mycotoxins decreased slightly with the increase of usage times, but still maintained a high adsorption rate and stability. For effectiveness comparison and evaluation, the composite and commercial DZTMS-PREP immune affinity column were used to treat three samples of corn, wheat, and oat flour, and the purification effect of the two pretreatment methods on the four toxins was similar.
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Affiliation(s)
- Qiqi Han
- Department of Food Science and Engineering, Beijing University of Agriculture, Beijing 102206, China; Beijing Laboratory of Food Quality and Safety, Beijing, China; Beijing Key Laboratory of Agricultural Product Detection and Control of Spoilage Organisms and Pesticide Residue, Beijing, China
| | - Yimeng Sun
- Department of Food Science and Engineering, Beijing University of Agriculture, Beijing 102206, China; Beijing Laboratory of Food Quality and Safety, Beijing, China; Beijing Key Laboratory of Agricultural Product Detection and Control of Spoilage Organisms and Pesticide Residue, Beijing, China
| | - Ke Ding
- Department of Food Science and Engineering, Beijing University of Agriculture, Beijing 102206, China; Beijing Laboratory of Food Quality and Safety, Beijing, China; Beijing Key Laboratory of Agricultural Product Detection and Control of Spoilage Organisms and Pesticide Residue, Beijing, China.
| | - Xiangning Chen
- Department of Food Science and Engineering, Beijing University of Agriculture, Beijing 102206, China; Beijing Laboratory of Food Quality and Safety, Beijing, China; Beijing Key Laboratory of Agricultural Product Detection and Control of Spoilage Organisms and Pesticide Residue, Beijing, China
| | - Tao Han
- Department of Food Science and Engineering, Beijing University of Agriculture, Beijing 102206, China; Beijing Laboratory of Food Quality and Safety, Beijing, China; Beijing Key Laboratory of Agricultural Product Detection and Control of Spoilage Organisms and Pesticide Residue, Beijing, China
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32
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Chen Y, Lu Z, Li G, Hu Y. β-Cyclodextrin porous polymers with three-dimensional chiral channels for separation of polar racemates. J Chromatogr A 2020; 1626:461341. [DOI: 10.1016/j.chroma.2020.461341] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 06/10/2020] [Accepted: 06/11/2020] [Indexed: 12/28/2022]
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Xiao R, Abdu HI, Wei L, Wang T, Huo S, Chen J, Lu X. Fabrication of magnetic trimetallic metal–organic frameworks for the rapid removal of tetracycline from water. Analyst 2020; 145:2398-2404. [DOI: 10.1039/c9an02481f] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The metal–organic framework (MOF-74) series has the most open metal sites.
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Affiliation(s)
- Rui Xiao
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou 730070
- P. R. China
| | - Hassan Idris Abdu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou 730070
- P. R. China
| | - Liping Wei
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou 730070
- P. R. China
| | - Tieying Wang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou 730070
- P. R. China
| | - Shuhui Huo
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou 730070
- P. R. China
| | - Jing Chen
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou 730070
- P. R. China
| | - Xiaoquan Lu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou 730070
- P. R. China
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34
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Tay HM, Rawal A, Hua C. S-Mg2(dobpdc): a metal–organic framework for determining chirality in amino acids. Chem Commun (Camb) 2020; 56:14829-14832. [DOI: 10.1039/d0cc05539e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Solid-state 13C NMR was used to differentiate the d- and l-enantiomers of three BOC-protected amino acids (Ala, Val, Pro) when appended to the chiral S-Mg2dobpdc MOF.
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Affiliation(s)
- Hui Min Tay
- School of Chemistry
- The University of Melbourne
- Parkville
- Australia
| | - Aditya Rawal
- Mark Wainwright Analytical Centre
- University of New South Wales
- Kensington
- Australia
| | - Carol Hua
- School of Chemistry
- The University of Melbourne
- Parkville
- Australia
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35
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Liu Y, Cai L, Lun J, Zhao M, Guo X. Enantiomeric separation and molecular docking study of seven imidazole antifungal drugs on a cellulose tris-(3,5-dimethylphenylcarbamate) chiral stationary phase. NEW J CHEM 2020. [DOI: 10.1039/d0nj03657a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Chiral separation and molecular docking study of seven imidazole antifungal drugs were performed on a cellulose tris-(3,5-dimethylphenylcarbamate) chiral stationary phase (Chiralcel OD-RH).
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Affiliation(s)
- Yanru Liu
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
| | - Liangzhao Cai
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
| | - Jia Lun
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
| | - Min Zhao
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
| | - Xingjie Guo
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
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